From owner-svn-src-stable@freebsd.org Mon Oct 5 19:22:28 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D4E9042DC2F; Mon, 5 Oct 2020 19:22:28 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4C4r8N5JyHz4PB6; Mon, 5 Oct 2020 19:22:28 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 99E561A8AA; Mon, 5 Oct 2020 19:22:28 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 095JMSNh040278; Mon, 5 Oct 2020 19:22:28 GMT (envelope-from np@FreeBSD.org) Received: (from np@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 095JMSFn040277; Mon, 5 Oct 2020 19:22:28 GMT (envelope-from np@FreeBSD.org) Message-Id: <202010051922.095JMSFn040277@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: np set sender to np@FreeBSD.org using -f From: Navdeep Parhar Date: Mon, 5 Oct 2020 19:22:28 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r366460 - stable/12/sys/dev/cxgbe X-SVN-Group: stable-12 X-SVN-Commit-Author: np X-SVN-Commit-Paths: stable/12/sys/dev/cxgbe X-SVN-Commit-Revision: 366460 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Oct 2020 19:22:28 -0000 Author: np Date: Mon Oct 5 19:22:28 2020 New Revision: 366460 URL: https://svnweb.freebsd.org/changeset/base/366460 Log: MFC r366247: cxgbe(4): Avoid unnecessary work in the firmware during netmap tx. Bind the netmap tx queues to a special '0xff' scheduling class which makes the firmware skip some processing related to rate limiting on the outgoing traffic. Future firmwares will do this automatically. Sponsored by: Chelsio Communications Modified: stable/12/sys/dev/cxgbe/t4_netmap.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/cxgbe/t4_netmap.c ============================================================================== --- stable/12/sys/dev/cxgbe/t4_netmap.c Mon Oct 5 18:59:10 2020 (r366459) +++ stable/12/sys/dev/cxgbe/t4_netmap.c Mon Oct 5 19:22:28 2020 (r366460) @@ -329,6 +329,22 @@ alloc_nm_txq_hwq(struct vi_info *vi, struct sge_nm_txq nm_txq->udb = (volatile void *)udb; } + if (sc->params.fw_vers < FW_VERSION32(1, 25, 1, 0)) { + uint32_t param, val; + + param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) | + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DMAQ_EQ_SCHEDCLASS_ETH) | + V_FW_PARAMS_PARAM_YZ(nm_txq->cntxt_id); + val = 0xff; + rc = -t4_set_params(sc, sc->mbox, sc->pf, 0, 1, ¶m, &val); + if (rc != 0) { + device_printf(vi->dev, + "failed to bind netmap txq %d to class 0xff: %d\n", + nm_txq->cntxt_id, rc); + rc = 0; + } + } + return (rc); }